Spring-wheel.



PATENTED APR. 17, 1906.

R. B. PARSONS.

SPRING WHEEL.

APPLICATION FILED MA-R-15,1905.

NDHRIS PETERS. INC.` LITHO WSHINGTUN, D. C.

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To IZZ when?) 'it' iti/tty concern:

`:.-. Be vit 'known that'I, REGINALD Bowman Pnnsonafa subject of the King of Great Britain -and-'"Ireland, residing in the city and countyy of Kingston upon Hull, England, have 2- invented vcertain new and 'useful Im- -vprovements in Spring-Wieels and I do herebydeclarefthetollowin to be a tull,'clear,

andexact" description o the invention, suchas will enable others skilled in the 'art to which it appertains to make and use the. saine.

' This.inventionrelates to wwheels'adapted for cycles, motor-cars, or the like vehicles requiring resilient tires, such. as pneumatic tires, and has for its object to ,construct a wheel in which the resiliency of a pneumatic tire is combined with the security of a solid tire.

In carrying my .invention into effect the wheel consists in respect of its tire and tire connections of a pliable rim or outer periphery, preferably flat, which is held in position outside the ordinary rimoiI the wheel proper, which inner rim being rigid may be either fiat or concave-the connection between the two rims consisting of a series of springs and spindles acting in combination and otherwise arranged and iitted between the two rims as hereinafter described, reference being had to the annexed drawings.

As the improvements constituting this invention concern only the tire` and the special means by which it is secured in position and adapted for its purpose, the wheel in other. respects may be of various'torms or designs of construction, as required for various purposes, being as light as possible for cycles and of heavier and stiffer caliber for motor-cars.

It being understood that the resilience is to be imparted to the outer rim only, the inner rim being necessarily rigid as forming the outer or binding trame of the wheel, the resilience necessary for easy riding is obtained by the intervention between the two rims of a system of springs pitched at suitable and equal intervals between the rims and secured in position by spindles.

In the drawings, Figure l illustrates, mainly in elevation but partly in sectionJ a sufficient extent of the periphery oi a wheel to clearly' present those characteristic features which differentiate my invention from various aproximations thereto, the rest of the wheel heilig omitted as Jforming no part oi the in` vention, and therefore requiring no further description as to its construction, which may Spams-WHEEL 'v :Specification of LettersJatent. I v' Patented April 1906. jf piantine ili rimette; 1905.- sriiiiolanaigg.

be varied as required for diiferent purposes. Fig. 2 is a transverse section taken o'n line a: m of Fig. 1, and Figs. v3 and 4 are sectional detail views'of the outer rims and tires, as hereinai'ter explained.

The outerfrim a is a light spring-steel band the inner rim -b being preferably of the ordinary concave form, as shown, resilience being' essential inthe former and rigidity in the latter. The spindles'c are rigidly securedgto the outer rim a, but are free to work in the inner rim l), the movement being in the direct line inwhichthe spindle is set. Each spindleis encircled by a spiral spring d, abutting against both rims. These springs are of the best steel and careiully` adjusted 'as to strength and compression to set up the req-l uisite 'resilience in the outer rim afbemg guided and 4directed in their vaction by the spindles c. outer rim aand the plgoper rigidity in the inner rim t, the practical utilization of the resilience of the outer rim depends upon the combined action ofthe spindles c and springs d, adjusted as follows: The spindles are -rigidly connectedto the outer rim a, but capable of a direct inward and outward movenient through the inner rim b, subject to the action of and as guiding su ports to the sdrines d. Both rims being o thin material are t wckened up where the spindles pass through them by the washers e e2, rigidly secured thereto, sothat the spindles can be rig-` idly secured to rim a by a driving lit through it and the washers e', which is preferable to screwingthe spindle into the rim and washer which weakens the spindle-head, the spindle having a suiiicient free-play bcaring-surface in the inner rim l) and washer c2.

In` addition to a cement solution -the tire may be secured to the outer rim a by screws f, supplemented, if desired, by the spindleheads, projected, as at c', into the tire.

In Figs.- 3 and 4 -convenient ymeans are shown by which the outer rim a is strengthened for the purposes more'.especiallyl of motor-cars, in Fig 3 by flat rim af, with its outer edges bent over, as shown, the increased strength and security ot the/tire he- .ing attained by a sacrifice of resilience, and in Fig. 4' by bands a2, placed at intervals aud screwed to the rim a; but it is to beunderstood that I do not exclude. myself from other convenient or suitable means for effecting the sa rre purposes.

The combined springs'and spindles shown Given a'suitable resilience in the Ln the drawings as set in central and sin-le file between the outer and inner rims cou if desired,l be laced two abreast or in two circumferentia lile's with each file pitched to' alternate with the other, and in any case it is preferable to give'the springs and spindle an intermediate pitch to that of the spokes, as shown in Fig. 1.

In conclusion, I would observe that I am aware that various attempts have been made" to provide a resilient tire, for cycle and the like wheels by means of an outer rim mounted on springs. In some cases springs alone have been used without spindles or springs and spindles have both been used but apart from each other, or the spindles have been allowed undue playin one or other of the rims, or have been secured to the inner insteadof the outer rim, so that either the outer rim has 'been able to swerve sidewise relatively to the inner rim or the inner rim has been able to rotate in advance of the outer rim. I thereforewmake no claim tosuch approximations to the improvements constituting my invention, by which improvements the outer rim is allowed no deviation -from its normal posis hIn testimony whereof I aflix tion other than its intended resilience in conjunction with the spirall springs, as hereinbefore described.

Having thus described m I wishvto claim and secure il of the United States, is l In a spring-wheel, the combination of an inner rim, an outer rim of Hat teel, spindles rim and movreely through said inner rim, springs invention, what y Letters Patent able encircling saidspindles respectively,l the n s ofsai outer e spindles bein extended outward considerably beyond sain? and a soli l-rubber tire encircling said outer rim in which the outwardly-projecting ends of said'spindlesare embedded, said inner and outer rims being thickened in roximity to said spindlesby means of Waser-plates secured thereto, substantially as described.

my signature 1n gpresence of two Witnesses.

CHARLES LARARD, MARY fDIxoN.

outer-rim, i 

